Con Edison Test B Practice 2026 – Comprehensive All-in-One Guide for Gas Safety, Electrical Theory, and Job Procedures Success!

Gas migration happens when gas moves from the supply into a building because there are pressure differences between the gas in the lines and the surrounding air. Gas can travel through small openings, cracks, joints, or penetrations in the structure, seeking a path to the living space.

The way to prevent this is to make sure gas is vented properly to the outdoors, seal up any openings or gaps where gas could seep in, and fix leaks or faulty fittings promptly. Keeping appliances correctly vented, sealing around penetrations like pipes and wiring, and repairing leaks quickly all reduce the pressure-driven pathways that let gas enter a building. If you ever smell gas or suspect a leak, evacuate and contact the utility or emergency services immediately.